47379779 has 4 divisors (see below), whose sum is σ = 47402784. Its totient is φ = 47356776.

The previous prime is 47379769. The next prime is 47379809. The reversal of 47379779 is 97797374.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47379779 - 2⁸ = 47379523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47379779.

It is not an unprimeable number, because it can be changed into a prime (47379769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8072 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (11850696).

Almost surely, 2^47379779 is an apocalyptic number.

47379779 is a deficient number, since it is larger than the sum of its proper divisors (23005).

47379779 is a wasteful number, since it uses less digits than its factorization.

47379779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23004.

The product of its digits is 2333772, while the sum is 53.

The square root of 47379779 is about 6883.2971024067. The cubic root of 47379779 is about 361.8520273707.

The spelling of 47379779 in words is "forty-seven million, three hundred seventy-nine thousand, seven hundred seventy-nine".